SOLUTION: Please help me write this equation. Latoya Smith is a buyer for a large manufacturing company. She can purchase 200 pound of chemicals for $95. She can also purchase mixing vats

Question 460281: Please help me write this equation.
Latoya Smith is a buyer for a large manufacturing company. She can purchase 200 pound of chemicals for $95. She can also purchase mixing vats for $400 each. Sales tax on all products is 6% fo the total cost of the order. Shipping cost for her order will be a flat $30.
Question:
This month she does not yet know how many mixing vats she will need to order. Let y= number of mixing vats required. Write an equation using y that she can use to determine the total amount of her order. Assume no chemicals are ordered, only vats.
Answer by simranb(63) (Show Source): You can put this solution on YOUR website!
Let x be the total amount of her order
Cost of mixing vats=400
No of mixing vats =y
Sales tax = 6%
Total cost of mixing vats = 400y
THen equation:
6%(400y)+400y=x
+400y=x (note that i have replaced 6% by 6/100)
6*y+400y=x
6y+400y=x
406y=x
y=x/406

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